Acids, Bases and Salts - Case Studies
Q. What is the primary product when NaOH reacts with HCl?
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A.
NaCl
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B.
H2O
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C.
NaCl and H2O
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D.
NaOH
Solution
The reaction between NaOH and HCl produces NaCl (sodium chloride) and H2O (water).
Correct Answer: C — NaCl and H2O
Q. What type of reaction occurs when an acid reacts with a metal?
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A.
Redox reaction
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B.
Decomposition
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C.
Neutralization
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D.
Synthesis
Solution
The reaction between an acid and a metal is a redox reaction, where the metal is oxidized.
Correct Answer: A — Redox reaction
Q. Which of the following compounds acts as a Lewis acid?
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A.
BF3
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B.
NH3
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C.
H2O
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D.
NaOH
Solution
BF3 (boron trifluoride) is a Lewis acid because it can accept an electron pair.
Correct Answer: A — BF3
Q. Which of the following is a property of acids?
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A.
Bitter taste
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B.
Slippery feel
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C.
Sour taste
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D.
Conduct electricity only in solid state
Solution
Acids are known for their sour taste, while bases are bitter and slippery.
Correct Answer: C — Sour taste
Q. Which of the following is a salt formed from a strong acid and a weak base?
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A.
NaCl
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B.
NH4Cl
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C.
K2SO4
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D.
CaCO3
Solution
NH4Cl (ammonium chloride) is a salt formed from the strong acid HCl and the weak base NH3.
Correct Answer: B — NH4Cl
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